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Thermal conductivity of Ca α‐SiAlON ceramics with varying m and n values.
- Source :
-
Journal of the American Ceramic Society . Oct2023, Vol. 106 Issue 10, p5642-5647. 6p. - Publication Year :
- 2023
-
Abstract
- α‐SiAlON is well known for its excellent mechanical properties, but its thermal properties are less investigated. In this work, we investigate the thermal conductivity of Ca α‐SiAlON ceramics with varying m and n values and prepared samples by spark plasma sintering (SPS) at 1600°C or gas pressure sintering (GPS) at 1800°C and 1900°C. The prepared Ca α‐SiAlON ceramics showed thermal conductivities ranging from 4.6 to 10.7 W/(mK) at 25°C. It was found that the thermal conductivity of the α‐SiAlON samples could be reduced by increasing either m or n or both. Besides, the samples prepared by SPS had lower thermal conductivity compared with those by GPS due to their smaller grain size, and the effect of m and n would be minor after m reached 2. These results provide basic knowledge for tuning α‐SiAlON's thermal conductivity for applications concerning thermal management. [ABSTRACT FROM AUTHOR]
- Subjects :
- *THERMAL conductivity
*THERMAL properties
*GRAIN size
Subjects
Details
- Language :
- English
- ISSN :
- 00027820
- Volume :
- 106
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Journal of the American Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 169706790
- Full Text :
- https://doi.org/10.1111/jace.19264